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fix(plan-canvas): use OS-managed startup lock

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haelyra
2026-08-28 17:29:01 -04:00
parent 6ca0540dba
commit cbc35c098a
3 changed files with 28 additions and 68 deletions
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docs/design/plan-canvas.md
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@@ -82,7 +82,7 @@ after 30 min, `ECC_PLAN_CANVAS_IDLE_MS`). Feedback is deliver-and-drain: queued
handed to exactly one `await` call and persisted to disk until then, so nothing is lost if
the poll is interrupted.
- `GET /health` — `{ok, app, version, protocolVersion, runtimeId}`; the CLI reuses a detached server only when its package, protocol, and Canvas-module fingerprint match, preventing an older same-version worktree from serving stale browser code. A per-user, port-scoped startup lock serializes compatibility checks and replacement so concurrent opens reuse the winning server instead of racing two detached launches.
- `GET /health` — `{ok, app, version, protocolVersion, runtimeId}`; the CLI reuses a detached server only when its package, protocol, and Canvas-module fingerprint match, preventing an older same-version worktree from serving stale browser code. An OS-managed, port-scoped startup lock serializes compatibility checks and replacement so concurrent opens reuse the winning server instead of racing two detached launches. The lock is released automatically when its process exits.
- `GET /` — session list (ECC chrome)
- `POST /api/sessions` `{file, reopen?}` — open/resume; `409 user-ended` unless `reopen`
- `GET /canvas/<key>` — editor chrome; `GET /artifact/<key>/` — rendered artifact